Originally Posted by
bushyar15
The GRP is very good engine too. But, it lacks bottom-end. The power delivery is very linear, but its a slow curve regardless of what shoes and springs I use in the clutch when compared to the V-Spec.
If your GRP is lacking bottom end you need to tune it a bit better. If I want it too mine will ballon all 4 on demand. If you are tuning it like your Vspec, that is where you are going wrong. Tune in the bottom end to a lean bog, back it off 3 hours, reset your idle gap, then tune the top for run on......ballistic and runs about 200.